设置load-on-startup为1
<!-- 自动起动这个servlet -->
<servlet>
<servlet-name>AutoQueueJob</servlet-name>
<servlet-class>com.ekin.test.servlet.AutoQueueJob</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>AutoQueueJob</servlet-name>
<url-pattern>/AutoQueueJob</url-pattern>
</servlet-mapping>